CN107880540A - Modified nylon composite material for selective laser sintering and preparation method thereof - Google Patents
Modified nylon composite material for selective laser sintering and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/08—Oxygen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3437—Six-membered rings condensed with carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
A kind of modified nylon composite material for selective laser sintering and preparation method thereof, wherein the modified nylon composite material for selective laser sintering, including following weight than component：50 95 parts of nylon powder；0.1 1 parts of antioxidant；0.1 1 parts of powder flow aid；5 50 parts of four acicular type zinc oxide crystal whisker；Wherein, the needle-like body length of four acicular type zinc oxide crystal whisker is not less than 50 μm.Modified nylon composite material for selective laser sintering and preparation method thereof of the present invention improves the powdering orientation technology problem of fibrous composite, have powder flowbility is good, sintering process stably, and each mechanical property is excellent, evenly.
Description
Technical field
The invention belongs to increases material manufacturing technology field, and in particular to a kind of modification of nylon for selective laser sintering is answered
Condensation material and preparation method thereof.
Background technology
3D printing technique is the common name of increases material manufacturing technology, be one have Digitized manufacturing, highly flexible and adaptability,
The advanced manufacturing technology for the distinguishing features such as direct CAD model drives, quick, material type is rich and varied, it can be by the several of prototype
The combined information of what shape, structure and selected materials establishes digitization descriptive model, and these information are output to computer afterwards
The electromechanical integrated manufacturing system of control carries out point-by-point, by-line, the three-dimensional packing shaping production 3D solid by face.Relative to tradition
Subtract material manufacture process technology, increases material manufacturing technology can just pass through without proembryo and mould directly by computer model data
The method being successively superimposed produces any required physical member, can effectively simplify the fabrication schedule of product, shorten grinding for product
In the cycle processed, improve efficiency and reduce cost.3D printing technique is widely used to Aero-Space, automobile making, Making mold, life
The numerous areas such as thing engineering and medical treatment, building, art manufacture.Selective Laser Sintering（SLS）It is common in the market
A kind of 3D printing method, the method can produce high-precision manufacture parts, by many field extensive uses.
Be commonly used in selective laser sintering consumptive material in the market is mostly nylon material, and nylon material is as current
First large-engineering plastics, most of kinds are Crystalline plastics, contain amido link in macromolecular chain, can form hydrogen bond, and it has
There is the excellent characteristic such as tough, wear-resisting, impact resistance, endurance, corrosion-resistant, particularly wearability and self-lubricating property is excellent, rubs
It is small to wipe coefficient, thus nylon increases rapidly steadily in the keen competition with Other Engineering plastics, is widely used in automobile family expenses
The manufacture of the parts such as electrical equipment and sports equipment.But nylon material inevitably produces in selective laser sintering process
Raw volume contraction, so that sintered part size changes, i.e., limits its application significantly.
, at present, should using being blended in nylon polymer powder and adding fiber filling in order to solve this technical problem
Although mode can improve the dimensional accuracy of sintered part and the intensity in powdering direction, because fiber is in selective laser sintering paving
Orientation can be produced during powder, so as to cause the performance of nylon composite materials in the horizontal plane difference occur so that along fiber
The direction mechanics mechanical performance of major axis is much higher than the performance perpendicular to fiber long axes direction, so that the globality of sintered part
Can heterogeneity.
The content of the invention
For above-mentioned technical problem existing for prior art, the invention provides a kind of powder flowbility is good, agglomerant
Skill is stable, and each mechanical property is excellent, the modified nylon composite material and its system for selective laser sintering evenly
Preparation Method, so as to improve the powdering orientation technology problem of fibrous composite.
In order to solve the above technical problems, the invention provides a kind of modification of nylon composite wood for selective laser sintering
Material, including following weight than component：
Nylon powder 50-95 parts；
Antioxidant 0.1-1 parts；
Powder flow aid 0.1-1 parts；
Four acicular type zinc oxide crystal whisker 5-50 parts；
Wherein, the needle-like body length of four acicular type zinc oxide crystal whisker is not less than 50 μm.
As present invention further optimization scheme, the nylon powder is PA6, PA66, PA11, PA12, PA 46, PA
610th, the one or more in PA 612, PA1010, PA1012, PA1212.
As present invention further optimization scheme, the needle-like body length of the four acicular type zinc oxide crystal whisker is 50-200 μ
M, spicule root diameter (RD) are 0.5-20 μm.
As present invention further optimization scheme, the antioxidant is Hinered phenols antioxidant, phosphorous acid esters antioxygen
One or more in agent.
As present invention further optimization scheme, the Hinered phenols antioxidant is 2,6- three-level butyl -4- methylbenzenes
It is phenol, double（3.5- three-level butyl -4- hydroxy phenyls）Thioether, four（β-（3.5- three-level butyl -4- hydroxy phenyls）Propionic acid）Ji Wusi
One or more in alcohol.
As present invention further optimization scheme, the particle diameter of the nylon powder is 60 μm -270 μm.
As present invention further optimization scheme, the powder flow aid is aerosil, nano silicon carbide
One or more in silicon, nano aluminium oxide, nano calcium oxide, nano titanium oxide, nano-calcium carbonate.
Present invention also offers a kind of preparation method of the modified nylon composite material for selective laser sintering, bag
Include：
The each component included for the modified nylon composite material of selective laser sintering described in any of the above-described is mixed and stirred
Mix uniformly, and the modified nylon composite material for selective laser sintering is obtained after being dried.
As present invention further optimization scheme, the rotating speed of the mixing is 500-2000r/min, is mixed
Time is 1-60min.
As present invention further optimization scheme, the temperature of the drying is less than 100 DEG C, and the time dried is 1-
48h。
Modified nylon composite material for selective laser sintering of the present invention and preparation method thereof has beneficial below
Effect：
（1）, by using needle-like body length be not less than 50 μm of four acicular type zinc oxide crystal whisker, not only cause modification of nylon composite wood
Material has had enhancing effect and powder flowbility concurrently well, and because the space of four acicular type zinc oxide crystal whisker is stereochemical structure,
There is orientation in different directions, may be such that nylon powder will not be as single take be presented in roller direction during powdering
To realizing the synchronous of X-axis, Y-axis and Z axis strengthens modified effect, so as to the overall mechanical property for effectively increasing sintered part
Can, it ensure that the dimensionally stable of sinter molding part.
（2）, by the way that antioxidant is added in material, can prevent that nylon powder material is in laser sintered skill here well
The oxidizable technical problem of art high temperature.Further, since the addition of powder flow aid further improves the powder stream of material
Dynamic property so that powdering of the modification of nylon powder during selective sintering is more smooth, and then improves the essence of the product of printing
Degree and surface quality.
Embodiment
In order to avoid fiber has single direction arrangement in prior art fiber composite nylon material, so that sintering
The mechanics mechanical performance of product technical problem uneven in the plane, applicant of the present invention by numerous experiments finally
A kind of modified nylon composite material for selective laser sintering is arrived, the modification of nylon for being used for selective laser sintering is answered
Condensation material include following weight than component：
Nylon powder 50-95 parts；
Antioxidant 0.1-1 parts；
Powder flow aid 0.1-1 parts；
Four acicular type zinc oxide crystal whisker 5-50 parts；
Wherein, the needle-like body length of four acicular type zinc oxide crystal whisker is not less than 50 μm.Because the power of enhancing effect depends on four pins
The length of the needle-like body length of shape ZnOw, too short enhancing unobvious, the oversize overall flow for being unfavorable for composite powder, because
This, in order to preferably have enhancing effect and powder flowbility concurrently, it is preferable that the needle-like body length of the four acicular type zinc oxide crystal whisker
For 50-200 μm, spicule root diameter (RD) is 0.5-20 μm.
In specific implementation, the nylon powder be PA6, PA66, PA11, PA12, PA 46, PA 610, PA 612,
One or more in PA1010, PA1012, PA1212.
In specific implementation, the antioxidant is the one or more in Hinered phenols antioxidant, phosphite ester kind antioxidant,
Wherein, the Hinered phenols antioxidant is 2,6- three-level butyl -4- methylphenols, double（3.5- three-level butyl -4- hydroxy phenyls）
Thioether, four（β-（3.5- three-level butyl -4- hydroxy phenyls）Propionic acid）Pentaerythrite（Also referred to as antioxidant 1010）In one kind；Institute
Phosphite ester kind antioxidant is stated as three（2,4- di-t-butyls）Phenyl-phosphite（Also referred to as irgasfos 168）, diphenylamines, to benzene two
One or more in amine, EEDQ.The particle diameter of the antioxidant is chosen as 0.01-10 μm.
In specific implementation, the particle diameter of the nylon powder is 60 μm -270 μm, and preferably the particle diameter of nylon powder is on 60 μm of left sides
It is right.
In specific implementation, the powder flow aid is aerosil, nanometer silicon carbide, nano aluminium oxide, nanometer
One or more in calcium oxide, nano titanium oxide, nano-calcium carbonate.
Present invention also offers a kind of preparation method of the modified nylon composite material for selective laser sintering, bag
Include：
The each component included for the modified nylon composite material of selective laser sintering described in any of the above-described is mixed and stirred
Mix uniformly, and the modified nylon composite material for selective laser sintering is obtained after being dried.
In specific implementation, the rotating speed of the mixing is 500-2000r/min, and the mixing time is 1-60min；Institute
The temperature for stating drying is less than 100 DEG C, and the time dried is 1-48h.
In order to allow those skilled in the art to more fully understand and realize technical scheme, below by way of specific reality
The form for applying example is described in further details to technical scheme.
Embodiment 1
1st, raw material is prepared according to following each component and its weight proportion：：
Nylon powder：55 parts
Four acicular type zinc oxide crystal whisker：45 parts
Antioxidant：0.1 part
Powder flow aid：0.2 part
The nylon powder be fusing point at 220 DEG C, PA6 dusty material of the average grain diameter at 60 μm.The four-needle-like zinc oxide is brilliant
The needle-like body length of palpus is 70 μm, and spicule root diameter (RD) is 1 μm.The antioxidant is that particle diameter is 1.5 with excellent compatibility
μm 2,6- three-level butyl -4- methylphenols.The powder flow aid is aerosil.
2nd, the raw material of above-mentioned weight proportion is added in high speed mixer and carries out mixing 10min, obtained nylon and answer
Close mixture of powders；And the mix powder is positioned in 80 DEG C of drying boxes and is dried 12 hours, that is, it is compound to obtain nylon
Dusty material, for being fitted into progress selective laser sintering machine-shaping in SLS equipment.Wherein, the powder feeding cylinder of SLS printers
Preheating temperature is 170 DEG C, and moulding cylinder preheating temperature is 207 DEG C, laser power 50W, sweep span 0.3mm, powdering thickness
For 0.1mm.Aforesaid operations are carried out on Selective Laser Sintering, sinter above-mentioned powder, the sintering batten of gained is carried out
Performance test, it the results are shown in Table 1.
Embodiment 2
1st, raw material is prepared according to following each component and its weight proportion：：
Nylon powder：60 parts
Four acicular type zinc oxide crystal whisker：40 parts
Antioxidant：0.2 part
Powder flow aid：0.3 part
The nylon powder be fusing point at 250 DEG C, PA66 dusty material of the average grain diameter at 70 μm.The four-needle-like zinc oxide is brilliant
The needle-like body length of palpus is 95 μm, and spicule root diameter (RD) is 5 μm.The antioxidant is that particle diameter is 2.3 with excellent compatibility
μm three（2,4- di-t-butyls）Phenyl-phosphite.The powder flow aid is nano aluminium oxide.
2nd, the raw material of above-mentioned weight proportion is added in high speed mixer and carries out mixing 20min, obtained nylon and answer
Close mixture of powders；And the mix powder is positioned in 90 DEG C of drying boxes and is dried 8 hours, that is, obtain nylon composite powder
Powder material, for being fitted into progress selective laser sintering machine-shaping in SLS equipment.Wherein, the powder feeding cylinder of SLS printers is pre-
Hot temperature is 180 DEG C, and moulding cylinder preheating temperature is 240 DEG C, laser power 55W, sweep span 0.2mm, and powdering thickness is
0.15mm.Aforesaid operations are carried out on Selective Laser Sintering, sinter above-mentioned powder, by the sintering batten progressive of gained
It can test, the results are shown in Table 1.
Embodiment 3
The invention provides a kind of four acicular type zinc oxide crystal whisker modified nylon composite material for selective laser sintering,
1st, raw material is prepared according to following each component and its weight proportion：：
Nylon powder：70 parts
Four acicular type zinc oxide crystal whisker：30 parts
Antioxidant：0.3 part
Powder flow aid：0.1 part
The nylon powder be fusing point at 185 DEG C, PA1010 dusty material of the average grain diameter at 90 μm.The four-needle-like zinc oxide
The needle-like body length of whisker is 120 μm, and spicule root diameter (RD) is 12 μm.The antioxidant is with excellent compatibility, particle diameter
0.05 μm four（β-（3.5- three-level butyl -4- hydroxy phenyls）Propionic acid）Pentaerythrite.The powder flow aid is nanometer
Titanium dioxide.
2nd, the raw material of above-mentioned weight proportion is added in high speed mixer and carries out mixing 30min, obtained nylon and answer
Close mixture of powders；And the mix powder is positioned in 75 DEG C of drying boxes and is dried 24 hours, that is, it is compound to obtain nylon
Dusty material, for being fitted into progress selective laser sintering machine-shaping in SLS equipment.Wherein, the powder feeding cylinder of SLS printers
Preheating temperature is 150 DEG C, and moulding cylinder preheating temperature is 170 DEG C, laser power 45W, sweep span 0.15mm, powdering thickness
For 0.12mm.Aforesaid operations are carried out on Selective Laser Sintering, sinter above-mentioned powder, the sintering batten of gained is carried out
Performance test, it the results are shown in Table 1.
Embodiment 4
The invention provides a kind of four acicular type zinc oxide crystal whisker modified nylon composite material for selective laser sintering,
1st, raw material is prepared according to following each component and its weight proportion：：
Nylon powder：90 parts
Four acicular type zinc oxide crystal whisker：10 parts
Antioxidant：0.5 part
Powder flow aid：0.5 part
The nylon powder be fusing point at 182 DEG C, PA12 dusty material of the average grain diameter at 50 μm.The four-needle-like zinc oxide is brilliant
The needle-like body length of palpus is 150 μm, and spicule root diameter (RD) is 18 μm.The antioxidant is to exist with excellent compatibility, particle diameter
1.4 μm of EEDQ.The powder flow aid is nano calcium oxide.
2nd, the above-mentioned raw materials of above-mentioned weight proportion are added in high speed mixer and carry out mixing 60min, obtain Buddhist nun
Imperial powder composite mixture；And the mix powder is positioned in 70 DEG C of drying boxes and is dried 30 hours, that is, obtain nylon
Composite powder material, for being fitted into progress selective laser sintering machine-shaping in SLS equipment.Wherein, printing device is sent
Powder cylinder preheating temperature is 145 DEG C, and moulding cylinder preheating temperature is 168 DEG C, laser power 35W, sweep span 0.25mm, powdering
Thickness is 0.08mm.Aforesaid operations are carried out on Selective Laser Sintering, sinter above-mentioned powder, by the sintering batten of gained
Performance test is carried out, the results are shown in Table 1.
The performance parameter for the sintering batten that table 1, embodiment 1-4 are provided
Embodiment described above only expresses the numerous embodiments of the present invention, and its description is more specific and detailed, but simultaneously
The limitation to the scope of the claims of the present invention is not represented.For the person of ordinary skill of the art, present inventive concept is not being departed from
On the premise of, various modifications and improvements can be made, these belong to protection scope of the present invention, therefore, patent of the present invention
Protection domain should be determined by the appended claims.
Claims (10)
- A kind of 1. modified nylon composite material for selective laser sintering, it is characterised in that including following weight than group Part：Nylon powder 50-95 parts；Antioxidant 0.1-1 parts；Powder flow aid 0.1-1 parts；Four acicular type zinc oxide crystal whisker 5-50 parts；Wherein, the needle-like body length of four acicular type zinc oxide crystal whisker is not less than 50 μm.
- 2. modified nylon composite material according to claim 1, it is characterised in that the nylon powder be PA6, PA66, One or more in PA11, PA12, PA 46, PA 610, PA 612, PA1010, PA1012, PA1212.
- 3. modified nylon composite material according to claim 2, it is characterised in that the pin of the four acicular type zinc oxide crystal whisker Shape body length is 50-200 μm, and spicule root diameter (RD) is 0.5-20 μm.
- 4. modified nylon composite material according to claim 3, it is characterised in that the antioxidant is Hinered phenols antioxygen One or more in agent, phosphite ester kind antioxidant.
- 5. modified nylon composite material according to claim 4, it is characterised in that the Hinered phenols antioxidant is 2,6- It is three-level butyl -4- methylphenols, double（3.5- three-level butyl -4- hydroxy phenyls）Thioether, four（β-（3.5- three-level butyl -4- hydroxyls Phenyl）Propionic acid）One or more in pentaerythrite.
- 6. modified nylon composite material according to claim 4, it is characterised in that the particle diameter of the nylon powder is 60 μ m-270μm。
- 7. according to the modified nylon composite material described in any one of claim 1 to 6, it is characterised in that the flow of powder helps Agent is in aerosil, nanometer silicon carbide, nano aluminium oxide, nano calcium oxide, nano titanium oxide, nano-calcium carbonate One or more.
- A kind of 8. preparation method of modified nylon composite material for selective laser sintering, it is characterised in that including：By each group included for the modified nylon composite material of selective laser sintering described in any one of claim 1 to 7 Divide and be mixed evenly, and the modified nylon composite material for selective laser sintering is obtained after being dried.
- 9. the preparation method of modified nylon composite material according to claim 8, it is characterised in that the mixing Rotating speed is 500-2000r/min, and the mixing time is 1-60min.
- 10. the preparation method of modified nylon composite material according to claim 8 or claim 9, it is characterised in that the drying Temperature is less than 100 DEG C, and the time dried is 1-48h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128133A (en) * | 2018-08-02 | 2019-01-04 | 中广核研究院有限公司 | A kind of recombination radiation protective materials and preparation method |
| CN110666167A (en) * | 2019-09-11 | 2020-01-10 | 中广核研究院有限公司 | Selective laser sintering 3D printing shielding material and preparation method thereof, shielding piece and manufacturing method thereof |
| CN114181526A (en) * | 2021-12-21 | 2022-03-15 | 重庆交通大学绿色航空技术研究院 | Selective laser sintering elastic nano particle composite nylon powder and preparation method thereof |
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| CN103951971A (en) * | 2014-05-12 | 2014-07-30 | 湖南华曙高科技有限责任公司 | Carbon fiber reinforced resin powder material for selective laser sintering |
| CN105623248A (en) * | 2016-01-04 | 2016-06-01 | 江苏沃特新材料科技有限公司 | Polyamide composite material and preparation method thereof |
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2017
- 2017-12-28 CN CN201711456580.5A patent/CN107880540A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103951971A (en) * | 2014-05-12 | 2014-07-30 | 湖南华曙高科技有限责任公司 | Carbon fiber reinforced resin powder material for selective laser sintering |
| CN105623248A (en) * | 2016-01-04 | 2016-06-01 | 江苏沃特新材料科技有限公司 | Polyamide composite material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128133A (en) * | 2018-08-02 | 2019-01-04 | 中广核研究院有限公司 | A kind of recombination radiation protective materials and preparation method |
| CN110666167A (en) * | 2019-09-11 | 2020-01-10 | 中广核研究院有限公司 | Selective laser sintering 3D printing shielding material and preparation method thereof, shielding piece and manufacturing method thereof |
| CN110666167B (en) * | 2019-09-11 | 2022-03-18 | 中广核研究院有限公司 | Selective laser sintering 3D printing shielding material and preparation method thereof, shielding piece and manufacturing method thereof |
| CN114181526A (en) * | 2021-12-21 | 2022-03-15 | 重庆交通大学绿色航空技术研究院 | Selective laser sintering elastic nano particle composite nylon powder and preparation method thereof |
| CN114181526B (en) * | 2021-12-21 | 2023-12-29 | 重庆交通大学绿色航空技术研究院 | Elastic nanoparticle composite nylon powder sintered by selective laser and preparation method thereof |
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